<?php
if (!defined('ADODB_DIR')) die();
function oci_lob_desc($type) {
	switch ($type) {
		case OCI_B_BFILE: $result = OCI_D_FILE; break;
		case OCI_B_CFILEE: $result = OCI_D_FILE; break;
		case OCI_B_CLOB: $result = OCI_D_LOB; break;
		case OCI_B_BLOB: $result = OCI_D_LOB; break;
		case OCI_B_ROWID: $result = OCI_D_ROWID; break;
		default: $result = false; break;
	}
	return $result;
}

class ADODB_oci8 extends ADOConnection {
	var $databaseType = 'oci8';
	var $dataProvider = 'oci8';
	var $replaceQuote = "''";
	var $concat_operator='||';
	var $sysDate = "TRUNC(SYSDATE)";
	var $sysTimeStamp = 'SYSDATE';
	var $metaDatabasesSQL = "SELECT USERNAME FROM ALL_USERS WHERE USERNAME NOT IN ('SYS','SYSTEM','DBSNMP','OUTLN') ORDER BY 1";
	var $_stmt;
	var $_commit = OCI_COMMIT_ON_SUCCESS;
	var $_initdate = true;
	var $metaTablesSQL = "select table_name,table_type from cat where table_type in ('TABLE','VIEW') and table_name not like 'BIN\$%'"; // bin$ tables are recycle bin tables
	var $metaColumnsSQL = "select cname,coltype,width, SCALE, PRECISION, NULLS, DEFAULTVAL from col where tname='%s' order by colno"; //changed by smondino@users.sourceforge. net
	var $metaColumnsSQL2 = "select column_name,data_type,data_length, data_scale, data_precision, 
    case when nullable = 'Y' then 'NULL'
    else 'NOT NULL' end as nulls,
    data_default from all_tab_cols 
  where owner='%s' and table_name='%s' order by column_id";
	var $_bindInputArray = true;
	var $hasGenID = true;
	var $_genIDSQL = "SELECT (%s.nextval) FROM DUAL";	
	var $_genSeqSQL = "
DECLARE
  PRAGMA AUTONOMOUS_TRANSACTION;
BEGIN
	execute immediate 'CREATE SEQUENCE %s START WITH %s';
END;
";

	var $_dropSeqSQL = "DROP SEQUENCE %s";
	var $hasAffectedRows = true;
	var $random = "abs(mod(DBMS_RANDOM.RANDOM,10000001)/10000000)";
	var $noNullStrings = false;
	var $connectSID = false;
	var $_bind = false;
	var $_nestedSQL = true;
	var $_hasOciFetchStatement = false;
	var $_getarray = false;
	var $leftOuter = '';
	var $session_sharing_force_blob = false;
	var $firstrows = true;
	var $selectOffsetAlg1 = 1000;
	var $NLS_DATE_FORMAT = 'YYYY-MM-DD';
	var $dateformat = 'YYYY-MM-DD';
 	var $useDBDateFormatForTextInput=false;
	var $datetime = false;
	var $_refLOBs = array();
	function ADODB_oci8() 
	{
		$this->_hasOciFetchStatement = ADODB_PHPVER >= 0x4200;
		if (defined('ADODB_EXTENSION')) $this->rsPrefix .= 'ext_';
	}
	function MetaColumns($table, $normalize=true) 
	{
	global $ADODB_FETCH_MODE;
		
		$schema = '';
		$this->_findschema($table, $schema);
		
		$false = false;
		$save = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
		if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);

		if ($schema)
			$rs = $this->Execute(sprintf($this->metaColumnsSQL2, strtoupper($schema), strtoupper($table)));
		else
			$rs = $this->Execute(sprintf($this->metaColumnsSQL,strtoupper($table)));
		
		if (isset($savem)) $this->SetFetchMode($savem);
		$ADODB_FETCH_MODE = $save;
		if (!$rs) {
			return $false;
		}
		$retarr = array();
		while (!$rs->EOF) {
			$fld = new ADOFieldObject();
	   		$fld->name = $rs->fields[0];
	   		$fld->type = $rs->fields[1];
	   		$fld->max_length = $rs->fields[2];
			$fld->scale = $rs->fields[3];
			if ($rs->fields[1] == 'NUMBER') {
				if ($rs->fields[3] == 0) $fld->type = 'INT';
	     		$fld->max_length = $rs->fields[4];
	    	}	
		   	$fld->not_null = (strncmp($rs->fields[5], 'NOT',3) === 0);
			$fld->binary = (strpos($fld->type,'BLOB') !== false);
			$fld->default_value = $rs->fields[6];
			
			if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) $retarr[] = $fld;	
			else $retarr[strtoupper($fld->name)] = $fld;
			$rs->MoveNext();
		}
		$rs->Close();
		if (empty($retarr))
			return  $false;
		else 
			return $retarr;
	}
	
	function Time()
	{
		$rs = $this->Execute("select TO_CHAR($this->sysTimeStamp,'YYYY-MM-DD HH24:MI:SS') from dual");
		if ($rs && !$rs->EOF) return $this->UnixTimeStamp(reset($rs->fields));
		
		return false;
	}
	function _connect($argHostname, $argUsername, $argPassword, $argDatabasename,$mode=0)
	{
		if (!function_exists('oci_pconnect')) return null;
		
        $this->_errorMsg = false;
		$this->_errorCode = false;
		
		if($argHostname) {
			if (empty($argDatabasename)) $argDatabasename = $argHostname;
			else {
				if(strpos($argHostname,":")) {
					$argHostinfo=explode(":",$argHostname);
				   	$argHostname=$argHostinfo[0];
					$argHostport=$argHostinfo[1];
			 	} else {
					$argHostport = empty($this->port)?  "1521" : $this->port;
	   			}
				
				if (strncasecmp($argDatabasename,'SID=',4) == 0) {
					$argDatabasename = substr($argDatabasename,4);
					$this->connectSID = true;
				}
				
				if ($this->connectSID) {
					$argDatabasename="(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=".$argHostname
					.")(PORT=$argHostport))(CONNECT_DATA=(SID=$argDatabasename)))";
				} else
					$argDatabasename="(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=".$argHostname
					.")(PORT=$argHostport))(CONNECT_DATA=(SERVICE_NAME=$argDatabasename)))";
			}
		}
		if ($mode==1) {
			$this->_connectionID = ($this->charSet) ? 
				oci_pconnect($argUsername,$argPassword, $argDatabasename,$this->charSet)
				:
				oci_pconnect($argUsername,$argPassword, $argDatabasename)
				;
			if ($this->_connectionID && $this->autoRollback)  oci_rollback($this->_connectionID);
		} else if ($mode==2) {
			$this->_connectionID = ($this->charSet) ? 
				oci_new_connect($argUsername,$argPassword, $argDatabasename,$this->charSet)
				:
				oci_new_connect($argUsername,$argPassword, $argDatabasename);
				
		} else {
			$this->_connectionID = ($this->charSet) ? 
				oci_connect($argUsername,$argPassword, $argDatabasename,$this->charSet)
				:
				oci_connect($argUsername,$argPassword, $argDatabasename);
		}
		if (!$this->_connectionID) return false;
		if ($this->_initdate) {
			$this->Execute("ALTER SESSION SET NLS_DATE_FORMAT='".$this->NLS_DATE_FORMAT."'");
		}
		return true;
   	}
	
	function ServerInfo()
	{
		$arr['compat'] = $this->GetOne('select value from sys.database_compatible_level');
		$arr['description'] = @oci_server_version($this->_connectionID);
		$arr['version'] = ADOConnection::_findvers($arr['description']);
		return $arr;
	}
	function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
	{
		return $this->_connect($argHostname, $argUsername, $argPassword, $argDatabasename,1);
	}
	function _nconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
	{
		return $this->_connect($argHostname, $argUsername, $argPassword, $argDatabasename,2);
	}
	
	function _affectedrows()
	{
		if (is_resource($this->_stmt)) return @oci_num_rows($this->_stmt);
		return 0;
	}
	
	function IfNull( $field, $ifNull ) 
	{
		return " NVL($field, $ifNull) ";
	}
	function DBDate($d,$isfld=false)
	{
		if (empty($d) && $d !== 0) return 'null';
		
		if ($isfld) {
			$d = _adodb_safedate($d);
			return 'TO_DATE('.$d.",'".$this->dateformat."')";
		}
		
		if (is_string($d)) $d = ADORecordSet::UnixDate($d);
		
		if (is_object($d)) $ds = $d->format($this->fmtDate);
		else $ds = adodb_date($this->fmtDate,$d);
		
		return "TO_DATE(".$ds.",'".$this->dateformat."')";
	}

	function BindDate($d)
	{
		$d = ADOConnection::DBDate($d);
		if (strncmp($d,"'",1)) return $d;
		
		return substr($d,1,strlen($d)-2);
	}
	
	function BindTimeStamp($ts)
	{
		if (empty($ts) && $ts !== 0) return 'null';
		if (is_string($ts)) $ts = ADORecordSet::UnixTimeStamp($ts);
		
		if (is_object($ts)) $tss = $ts->format("'Y-m-d H:i:s'");
		else $tss = adodb_date("'Y-m-d H:i:s'",$ts);
		
		return $tss;
	}
	function DBTimeStamp($ts,$isfld=false)
	{
		if (empty($ts) && $ts !== 0) return 'null';
		if ($isfld) return 'TO_DATE(substr('.$ts.",1,19),'RRRR-MM-DD, HH24:MI:SS')";
		if (is_string($ts)) $ts = ADORecordSet::UnixTimeStamp($ts);
	
		if (is_object($ts)) $tss = $ts->format("'Y-m-d H:i:s'");
		else $tss = date("'Y-m-d H:i:s'",$ts);
		
		return 'TO_DATE('.$tss.",'RRRR-MM-DD, HH24:MI:SS')";
	}
	
	function RowLock($tables,$where,$col='1 as adodbignore') 
	{
		if ($this->autoCommit) $this->BeginTrans();
		return $this->GetOne("select $col from $tables where $where for update");
	}
	
	function MetaTables($ttype=false,$showSchema=false,$mask=false) 
	{
		if ($mask) {
			$save = $this->metaTablesSQL;
			$mask = $this->qstr(strtoupper($mask));
			$this->metaTablesSQL .= " AND upper(table_name) like $mask";
		}
		$ret = ADOConnection::MetaTables($ttype,$showSchema);
		
		if ($mask) {
			$this->metaTablesSQL = $save;
		}
		return $ret;
	}
	function MetaIndexes ($table, $primary = FALSE, $owner=false)
	{
        global $ADODB_FETCH_MODE;

        $save = $ADODB_FETCH_MODE;
        $ADODB_FETCH_MODE = ADODB_FETCH_NUM;

        if ($this->fetchMode !== FALSE) {
               $savem = $this->SetFetchMode(FALSE);
        }
		$table = strtoupper($table);
		$primary_key = '';

		$false = false;
		$rs = $this->Execute(sprintf("SELECT * FROM ALL_CONSTRAINTS WHERE UPPER(TABLE_NAME)='%s' AND CONSTRAINT_TYPE='P'",$table));
		if (!is_object($rs)) {
			if (isset($savem)) 
				$this->SetFetchMode($savem);
			$ADODB_FETCH_MODE = $save;
            return $false;
        }
		
		if ($row = $rs->FetchRow())
		   $primary_key = $row[1];

		if ($primary==TRUE && $primary_key=='') {
			 if (isset($savem)) 
                $this->SetFetchMode($savem);
			$ADODB_FETCH_MODE = $save;
			return $false;
		}

        $rs = $this->Execute(sprintf("SELECT ALL_INDEXES.INDEX_NAME, ALL_INDEXES.UNIQUENESS, ALL_IND_COLUMNS.COLUMN_POSITION, ALL_IND_COLUMNS.COLUMN_NAME FROM ALL_INDEXES,ALL_IND_COLUMNS WHERE UPPER(ALL_INDEXES.TABLE_NAME)='%s' AND ALL_IND_COLUMNS.INDEX_NAME=ALL_INDEXES.INDEX_NAME",$table));

		
        if (!is_object($rs)) {
			if (isset($savem)) 
				$this->SetFetchMode($savem);
			$ADODB_FETCH_MODE = $save;
            return $false;
        }

		$indexes = array ();
        while ($row = $rs->FetchRow()) {
			if ($primary && $row[0] != $primary_key) continue;
            if (!isset($indexes[$row[0]])) {
				$indexes[$row[0]] = array(
				   'unique' => ($row[1] == 'UNIQUE'),
				   'columns' => array()
				);
            }
            $indexes[$row[0]]['columns'][$row[2] - 1] = $row[3];
        }
        foreach ( array_keys ($indexes) as $index ) {
            ksort ($indexes[$index]['columns']);
        }

		if (isset($savem)) { 
            $this->SetFetchMode($savem);
			$ADODB_FETCH_MODE = $save;
		}
        return $indexes;
	}
	
	function BeginTrans()
	{	
		if ($this->transOff) return true;
		$this->transCnt += 1;
		$this->autoCommit = false;
		$this->_commit = OCI_DEFAULT;
		
		if ($this->_transmode) $ok = $this->Execute("SET TRANSACTION ".$this->_transmode);
		else $ok = true;
		
		return $ok ? true : false;
	}
	
	function CommitTrans($ok=true) 
	{ 
		if ($this->transOff) return true;
		if (!$ok) return $this->RollbackTrans();
		
		if ($this->transCnt) $this->transCnt -= 1;
		$ret = oci_commit($this->_connectionID);
		$this->_commit = OCI_COMMIT_ON_SUCCESS;
		$this->autoCommit = true;
		return $ret;
	}
	
	function RollbackTrans()
	{
		if ($this->transOff) return true;
		if ($this->transCnt) $this->transCnt -= 1;
		$ret = oci_rollback($this->_connectionID);
		$this->_commit = OCI_COMMIT_ON_SUCCESS;
		$this->autoCommit = true;
		return $ret;
	}
	
	
	function SelectDB($dbName) 
	{
		return false;
	}

	function ErrorMsg() 
	{
		if ($this->_errorMsg !== false) return $this->_errorMsg;

		if (is_resource($this->_stmt)) $arr = @oci_error($this->_stmt);
		if (empty($arr)) {
			if (is_resource($this->_connectionID)) $arr = @oci_error($this->_connectionID);
			else $arr = @oci_error();
			if ($arr === false) return '';
		}
		$this->_errorMsg = $arr['message'];
		$this->_errorCode = $arr['code'];
		return $this->_errorMsg;
	}

	function ErrorNo() 
	{
		if ($this->_errorCode !== false) return $this->_errorCode;
		
		if (is_resource($this->_stmt)) $arr = @oci_error($this->_stmt);
		if (empty($arr)) {
			$arr = @oci_error($this->_connectionID);
			if ($arr == false) $arr = @oci_error();
			if ($arr == false) return '';
		}
		
		$this->_errorMsg = $arr['message'];
		$this->_errorCode = $arr['code'];
		
		return $arr['code'];
	}
	function SQLDate($fmt, $col=false)
	{	
		if (!$col) $col = $this->sysTimeStamp;
		$s = 'TO_CHAR('.$col.",'";
		
		$len = strlen($fmt);
		for ($i=0; $i < $len; $i++) {
			$ch = $fmt[$i];
			switch($ch) {
			case 'Y':
			case 'y':
				$s .= 'YYYY';
				break;
			case 'Q':
			case 'q':
				$s .= 'Q';
				break;
				
			case 'M':
				$s .= 'Mon';
				break;
				
			case 'm':
				$s .= 'MM';
				break;
			case 'D':
			case 'd':
				$s .= 'DD';
				break;
			
			case 'H':
				$s.= 'HH24';
				break;
				
			case 'h':
				$s .= 'HH';
				break;
				
			case 'i':
				$s .= 'MI';
				break;
			
			case 's':
				$s .= 'SS';
				break;
			
			case 'a':
			case 'A':
				$s .= 'AM';
				break;
				
			case 'w':
				$s .= 'D';
				break;
				
			case 'l':
				$s .= 'DAY';
				break;
				
			 case 'W':
				$s .= 'WW';
				break;
				
			default:
				if ($ch == '\\') {
					$i++;
					$ch = substr($fmt,$i,1);
				}
				if (strpos('-/.:;, ',$ch) !== false) $s .= $ch;
				else $s .= '"'.$ch.'"';
				
			}
		}
		return $s. "')";
	}
	
	function GetRandRow($sql, $arr = false)
	{
		$sql = "SELECT * FROM ($sql ORDER BY dbms_random.value) WHERE rownum = 1";
		
		return $this->GetRow($sql,$arr);
	}
	function SelectLimit($sql,$nrows=-1,$offset=-1, $inputarr=false,$secs2cache=0)
	{
		if ($this->firstrows) {
			if ($nrows > 500 && $nrows < 1000) $hint = "FIRST_ROWS($nrows)";
			else $hint = 'FIRST_ROWS';
			
			if (strpos($sql,'/*+') !== false)
				$sql = str_replace('/*+ ',"/*+$hint ",$sql);
			else
				$sql = preg_replace('/^[ \t\n]*select/i',"SELECT /*+$hint*/",$sql);
		}
		
		if ($offset == -1 || ($offset < $this->selectOffsetAlg1 && 0 < $nrows && $nrows < 1000)) {
			if ($nrows > 0) {	
				if ($offset > 0) $nrows += $offset;
				if ($this->databaseType == 'oci8po') {
					$sql = "select * from (".$sql.") where rownum <= ?";
				} else {
					$sql = "select * from (".$sql.") where rownum <= :adodb_offset";
				} 
				$inputarr['adodb_offset'] = $nrows;
				$nrows = -1;
			}
			$rs = ADOConnection::SelectLimit($sql,$nrows,$offset,$inputarr,$secs2cache);
			return $rs;
			
		} else {
			$q_fields = "SELECT * FROM (".$sql.") WHERE NULL = NULL";
		
			$false = false;
			if (! $stmt_arr = $this->Prepare($q_fields)) {
				return $false;
			}
			$stmt = $stmt_arr[1];
			 
			if (is_array($inputarr)) {
			 	foreach($inputarr as $k => $v) {
					if (is_array($v)) {
						if (sizeof($v) == 2)
							oci_bind_by_name($stmt,":$k",$inputarr[$k][0],$v[1]);
						else
							oci_bind_by_name($stmt,":$k",$inputarr[$k][0],$v[1],$v[2]);
					} else {
						$len = -1;
						if ($v === ' ') $len = 1;
						if (isset($bindarr)) {
							$bindarr[$k] = $v;
						} else {
							oci_bind_by_name($stmt,":$k",$inputarr[$k],$len);
							
						}
					}
				}
			}
			
			 if (!oci_execute($stmt, OCI_DEFAULT)) {
				 oci_free_statement($stmt); 
				 return $false;
			 }
			 
			 $ncols = oci_num_fields($stmt);
			 for ( $i = 1; $i <= $ncols; $i++ ) {
				 $cols[] = '"'.oci_field_name($stmt, $i).'"';
			 }
			 $result = false;
			
			 oci_free_statement($stmt); 
			 $fields = implode(',', $cols);
			 if ($nrows <= 0) $nrows = 999999999999;
			 else $nrows += $offset;
			 $offset += 1; 
			
			if ($this->databaseType == 'oci8po') {
					 $sql = "SELECT /*+ FIRST_ROWS */ $fields FROM".
					  "(SELECT rownum as adodb_rownum, $fields FROM".
					  " ($sql) WHERE rownum <= ?".
					  ") WHERE adodb_rownum >= ?";
				} else {
					 $sql = "SELECT /*+ FIRST_ROWS */ $fields FROM".
					  "(SELECT rownum as adodb_rownum, $fields FROM".
					  " ($sql) WHERE rownum <= :adodb_nrows".
					  ") WHERE adodb_rownum >= :adodb_offset";
				} 
				$inputarr['adodb_nrows'] = $nrows;
				$inputarr['adodb_offset'] = $offset;
				
			if ($secs2cache>0) $rs = $this->CacheExecute($secs2cache, $sql,$inputarr);
			else $rs = $this->Execute($sql,$inputarr);
			return $rs;
		}
	
	}
	function UpdateBlob($table,$column,$val,$where,$blobtype='BLOB')
	{
		switch(strtoupper($blobtype)) {
		default: ADOConnection::outp("<b>UpdateBlob</b>: Unknown blobtype=$blobtype"); return false;
		case 'BLOB': $type = OCI_B_BLOB; break;
		case 'CLOB': $type = OCI_B_CLOB; break;
		}
		
		if ($this->databaseType == 'oci8po') 
			$sql = "UPDATE $table set $column=EMPTY_{$blobtype}() WHERE $where RETURNING $column INTO ?";
		else 
			$sql = "UPDATE $table set $column=EMPTY_{$blobtype}() WHERE $where RETURNING $column INTO :blob";
		
		$desc = oci_new_descriptor($this->_connectionID, OCI_D_LOB);
		$arr['blob'] = array($desc,-1,$type);
		if ($this->session_sharing_force_blob) $this->Execute('ALTER SESSION SET CURSOR_SHARING=EXACT');
		$commit = $this->autoCommit;
		if ($commit) $this->BeginTrans();
		$rs = $this->_Execute($sql,$arr);
		if ($rez = !empty($rs)) $desc->save($val);
		$desc->free();
		if ($commit) $this->CommitTrans();
		if ($this->session_sharing_force_blob) $this->Execute('ALTER SESSION SET CURSOR_SHARING=FORCE');
		
		if ($rez) $rs->Close();
		return $rez;
	}
	function UpdateBlobFile($table,$column,$val,$where,$blobtype='BLOB')
	{
		switch(strtoupper($blobtype)) {
		default: ADOConnection::outp( "<b>UpdateBlob</b>: Unknown blobtype=$blobtype"); return false;
		case 'BLOB': $type = OCI_B_BLOB; break;
		case 'CLOB': $type = OCI_B_CLOB; break;
		}
		
		if ($this->databaseType == 'oci8po') 
			$sql = "UPDATE $table set $column=EMPTY_{$blobtype}() WHERE $where RETURNING $column INTO ?";
		else 
			$sql = "UPDATE $table set $column=EMPTY_{$blobtype}() WHERE $where RETURNING $column INTO :blob";
		
		$desc = oci_new_descriptor($this->_connectionID, OCI_D_LOB);
		$arr['blob'] = array($desc,-1,$type);
		
		$this->BeginTrans();
		$rs = ADODB_oci8::Execute($sql,$arr);
		if ($rez = !empty($rs)) $desc->savefile($val);
		$desc->free();
		$this->CommitTrans();
		
		if ($rez) $rs->Close();
		return $rez;
	}
	function Execute($sql,$inputarr=false) 
	{
		if ($this->fnExecute) {
			$fn = $this->fnExecute;
			$ret = $fn($this,$sql,$inputarr);
			if (isset($ret)) return $ret;
		}
		if ($inputarr) {
			$element0 = reset($inputarr); 
			$array2d =  $this->bulkBind && is_array($element0) && !is_object(reset($element0));
			if ($array2d || !$this->_bindInputArray) {
			if ($array2d && $this->_bindInputArray) {
				if (is_string($sql))
					$stmt = $this->Prepare($sql);
				else
					$stmt = $sql;
					
				foreach($inputarr as $arr) {
					$ret = $this->_Execute($stmt,$arr);
					if (!$ret) return $ret;
				}
				return $ret;
			} else {
				$sqlarr = explode(':',$sql);
				$sql = '';
				$lastnomatch = -2;
				foreach($sqlarr as $k => $str) {
						if ($k == 0) { $sql = $str; continue; }
						$ok = preg_match('/^([0-9]*)/', $str, $arr); 
			
						if (!$ok) $sql .= $str;
						else {
							$at = $arr[1];
							if (isset($inputarr[$at]) || is_null($inputarr[$at])) {
								if ((strlen($at) == strlen($str) && $k < sizeof($arr)-1)) {
									$sql .= ':'.$str;
									$lastnomatch = $k;
								} else if ($lastnomatch == $k-1) {
									$sql .= ':'.$str;
								} else {
									if (is_null($inputarr[$at])) $sql .= 'null';
									else $sql .= $this->qstr($inputarr[$at]);
									$sql .= substr($str, strlen($at));
								}
							} else {
								$sql .= ':'.$str;
							}
							
						}
					}
					$inputarr = false;
				}
			}
			$ret = $this->_Execute($sql,$inputarr);
			
			
		} else {
			$ret = $this->_Execute($sql,false);
		}

		return $ret;
	}
	function Prepare($sql,$cursor=false)
	{
	static $BINDNUM = 0;
	
		$stmt = oci_parse($this->_connectionID,$sql);

		if (!$stmt) {
			$this->_errorMsg = false;
			$this->_errorCode = false;
			$arr = @oci_error($this->_connectionID);
			if ($arr === false) return false;
		
			$this->_errorMsg = $arr['message'];
			$this->_errorCode = $arr['code'];
			return false;
		}
		
		$BINDNUM += 1;
		
		$sttype = @oci_statement_type($stmt);
		if ($sttype == 'BEGIN' || $sttype == 'DECLARE') {
			return array($sql,$stmt,0,$BINDNUM, ($cursor) ? oci_new_cursor($this->_connectionID) : false);
		}
		return array($sql,$stmt,0,$BINDNUM);
	}
	function ExecuteCursor($sql,$cursorName='rs',$params=false)
	{
		if (is_array($sql)) $stmt = $sql;
		else $stmt = ADODB_oci8::Prepare($sql,true); # true to allocate oci_new_cursor
	
		if (is_array($stmt) && sizeof($stmt) >= 5) {
			$hasref = true;
			$ignoreCur = false;
			$this->Parameter($stmt, $ignoreCur, $cursorName, false, -1, OCI_B_CURSOR);
			if ($params) {
				foreach($params as $k => $v) {
					$this->Parameter($stmt,$params[$k], $k);
				}
			}
		} else
			$hasref = false;
			
		$rs = $this->Execute($stmt);
		if ($rs) {
			if ($rs->databaseType == 'array') oci_free_cursor($stmt[4]);
			else if ($hasref) $rs->_refcursor = $stmt[4];
		}
		return $rs;
	}
	function Bind(&$stmt,&$var,$size=4000,$type=false,$name=false,$isOutput=false)
	{
		
		if (!is_array($stmt)) return false;
        
        if (($type == OCI_B_CURSOR) && sizeof($stmt) >= 5) { 
            return oci_bind_by_name($stmt[1],":".$name,$stmt[4],$size,$type);
        }
        
		if ($name == false) {
			if ($type !== false) $rez = oci_bind_by_name($stmt[1],":".$stmt[2],$var,$size,$type);
			else $rez = oci_bind_by_name($stmt[1],":".$stmt[2],$var,$size); // +1 byte for null terminator
			$stmt[2] += 1;
		} else if (oci_lob_desc($type)) {
			if ($this->debug) {
				ADOConnection::outp("<b>Bind</b>: name = $name");
			}
			$numlob = count($this->_refLOBs);
        	$this->_refLOBs[$numlob]['LOB'] = oci_new_descriptor($this->_connectionID, oci_lob_desc($type));
			$this->_refLOBs[$numlob]['TYPE'] = $isOutput;
			
			$tmp = $this->_refLOBs[$numlob]['LOB'];
	        $rez = oci_bind_by_name($stmt[1], ":".$name, $tmp, -1, $type);
			if ($this->debug) {
				ADOConnection::outp("<b>Bind</b>: descriptor has been allocated, var (".$name.") binded");
			}
			if ($isOutput == false) {
				$var = $this->BlobEncode($var);
				$tmp->WriteTemporary($var);
				$this->_refLOBs[$numlob]['VAR'] = &$var;
				if ($this->debug) {
					ADOConnection::outp("<b>Bind</b>: LOB has been written to temp");
				}
			} else {
				$this->_refLOBs[$numlob]['VAR'] = &$var;
			}
			$rez = $tmp;
		} else {
			if ($this->debug) 
				ADOConnection::outp("<b>Bind</b>: name = $name");
			
			if ($type !== false) $rez = oci_bind_by_name($stmt[1],":".$name,$var,$size,$type);
			else $rez = oci_bind_by_name($stmt[1],":".$name,$var,$size); 
		}
		
		return $rez;
	}
	
	function Param($name,$type='C')
	{
		return ':'.$name;
	}
	function Parameter(&$stmt,&$var,$name,$isOutput=false,$maxLen=4000,$type=false)
	{
			if  ($this->debug) {
				$prefix = ($isOutput) ? 'Out' : 'In';
				$ztype = (empty($type)) ? 'false' : $type;
				ADOConnection::outp( "{$prefix}Parameter(\$stmt, \$php_var='$var', \$name='$name', \$maxLen=$maxLen, \$type=$ztype);");
			}
			return $this->Bind($stmt,$var,$maxLen,$type,$name,$isOutput);
	}
	function _query($sql,$inputarr=false)
	{
		if (is_array($sql)) {
			$stmt = $sql[1];
			if (is_array($inputarr)) {
				$bindpos = $sql[3];
				if (isset($this->_bind[$bindpos])) {
					$bindarr = $this->_bind[$bindpos];
				} else {
					$bindarr = array();
					foreach($inputarr as $k => $v) {
						$bindarr[$k] = $v;
						oci_bind_by_name($stmt,":$k",$bindarr[$k],is_string($v) && strlen($v)>4000 ? -1 : 4000);
					}
					$this->_bind[$bindpos] = $bindarr;
				}
			}
		} else {
			$stmt=oci_parse($this->_connectionID,$sql);
		}
			
		$this->_stmt = $stmt;
		if (!$stmt) return false;
	
		if (defined('ADODB_PREFETCH_ROWS')) @oci_set_prefetch($stmt,ADODB_PREFETCH_ROWS);
			
		if (is_array($inputarr)) {
			foreach($inputarr as $k => $v) {
				if (is_array($v)) {
					if (sizeof($v) == 2)
						oci_bind_by_name($stmt,":$k",$inputarr[$k][0],$v[1]);
					else
						oci_bind_by_name($stmt,":$k",$inputarr[$k][0],$v[1],$v[2]);
					
					if ($this->debug==99) {
						if (is_object($v[0])) 
							echo "name=:$k",' len='.$v[1],' type='.$v[2],'<br>';
						else
							echo "name=:$k",' var='.$inputarr[$k][0],' len='.$v[1],' type='.$v[2],'<br>';
						
					}
				} else {
					$len = -1;
					if ($v === ' ') $len = 1;
					if (isset($bindarr)) {
						$bindarr[$k] = $v;
					} else {
						oci_bind_by_name($stmt,":$k",$inputarr[$k],$len);
					}
				}
			}
		}
		
        $this->_errorMsg = false;
		$this->_errorCode = false;
		if (oci_execute($stmt,$this->_commit)) {
			
			if (count($this -> _refLOBs) > 0) {
		
				foreach ($this -> _refLOBs as $key => $value) {
					if ($this -> _refLOBs[$key]['TYPE'] == true) {
						$tmp = $this -> _refLOBs[$key]['LOB'] -> load();
						if ($this -> debug) {
							ADOConnection::outp("<b>OUT LOB</b>: LOB has been loaded. <br>");
						}
						$this -> _refLOBs[$key]['VAR'] = $tmp;
					} else {
                        $this->_refLOBs[$key]['LOB']->save($this->_refLOBs[$key]['VAR']);
						$this -> _refLOBs[$key]['LOB']->free();
						unset($this -> _refLOBs[$key]);
                        if ($this->debug) {
							ADOConnection::outp("<b>IN LOB</b>: LOB has been saved. <br>");
						}
                    }					
				}
			}
		
            switch (@oci_statement_type($stmt)) {
                case "SELECT":
					return $stmt;
				
				case 'DECLARE':
                case "BEGIN":
                    if (is_array($sql) && !empty($sql[4])) {
						$cursor = $sql[4];
						if (is_resource($cursor)) {
							$ok = oci_execute($cursor);	
	                        return $cursor;
						}
						return $stmt;
                    } else {
						if (is_resource($stmt)) {
							oci_free_statement($stmt);
							return true;
						}
                        return $stmt;
                    }
                    break;
                default :
					
                    return true;
            }
		}
		return false;
	}
	function IsConnectionError($err)
	{
		switch($err) {
			case 378: 
			case 602:
			case 603:
			case 609:
			case 1012:
			case 1033:
			case 1043:
			case 1089:
			case 1090:
			case 1092:
			case 3113:
			case 3114:
			case 3122:
			case 3135:
			case 12153:
			case 27146:
			case 28511:
			return true;
		}
		return false;
	}
	function _close()
	{
		if (!$this->_connectionID) return;
		
		if (!$this->autoCommit) oci_rollback($this->_connectionID);
		if (count($this->_refLOBs) > 0) {
			foreach ($this ->_refLOBs as $key => $value) {
				$this->_refLOBs[$key]['LOB']->free();
				unset($this->_refLOBs[$key]);
			}
		}
		oci_close($this->_connectionID);
		
		$this->_stmt = false;
		$this->_connectionID = false;
	}
	
	function MetaPrimaryKeys($table, $owner=false,$internalKey=false)
	{
		if ($internalKey) return array('ROWID');
		$table = strtoupper($table);
		if ($owner) {
			$owner_clause = "AND ((a.OWNER = b.OWNER) AND (a.OWNER = UPPER('$owner')))";
			$ptab = 'ALL_';
		} else {
			$owner_clause = '';
			$ptab = 'USER_';
		}
		$sql = "
SELECT /*+ RULE */ distinct b.column_name
   FROM {$ptab}CONSTRAINTS a
	  , {$ptab}CONS_COLUMNS b
  WHERE ( UPPER(b.table_name) = ('$table'))
	AND (UPPER(a.table_name) = ('$table') and a.constraint_type = 'P')
	$owner_clause
	AND (a.constraint_name = b.constraint_name)";

 		$rs = $this->Execute($sql);
		if ($rs && !$rs->EOF) {
			$arr = $rs->GetArray();
			$a = array();
			foreach($arr as $v) {
				$a[] = reset($v);
			}
			return $a;
		}
		else return false;
	}
	function MetaForeignKeys($table, $owner=false)
	{
	global $ADODB_FETCH_MODE;
	
		$save = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
		$table = $this->qstr(strtoupper($table));
		if (!$owner) {
			$owner = $this->user;
			$tabp = 'user_';
		} else
			$tabp = 'all_';
			
		$owner = ' and owner='.$this->qstr(strtoupper($owner));
		
		$sql = 
"select constraint_name,r_owner,r_constraint_name 
	from {$tabp}constraints
	where constraint_type = 'R' and table_name = $table $owner";
		
		$constraints = $this->GetArray($sql);
		$arr = false;
		foreach($constraints as $constr) {
			$cons = $this->qstr($constr[0]);
			$rowner = $this->qstr($constr[1]);
			$rcons = $this->qstr($constr[2]);
			$cols = $this->GetArray("select column_name from {$tabp}cons_columns where constraint_name=$cons $owner order by position");
			$tabcol = $this->GetArray("select table_name,column_name from {$tabp}cons_columns where owner=$rowner and constraint_name=$rcons order by position");
			
			if ($cols && $tabcol) 
				for ($i=0, $max=sizeof($cols); $i < $max; $i++) {
					$arr[$tabcol[$i][0]] = $cols[$i][0].'='.$tabcol[$i][1];
				}
		}
		$ADODB_FETCH_MODE = $save;
		
		return $arr;
	}

	
	function CharMax()
	{
		return 4000;
	}
	
	function TextMax()
	{
		return 4000;
	}
	function qstr($s,$magic_quotes=false)
	{
		if ($this->noNullStrings && strlen($s)==0)$s = ' ';
		if (!$magic_quotes) {	
			if ($this->replaceQuote[0] == '\\'){
				$s = str_replace('\\','\\\\',$s);
			}
			return  "'".str_replace("'",$this->replaceQuote,$s)."'";
		}
		if (!ini_get('magic_quotes_sybase')) {
			$s = str_replace('\\"','"',$s);
			$s = str_replace('\\\\','\\',$s);
			return "'".str_replace("\\'",$this->replaceQuote,$s)."'";
		} else {
			return "'".$s."'";
		}
	}
	
}
class ADORecordset_oci8 extends ADORecordSet {

	var $databaseType = 'oci8';
	var $bind=false;
	var $_fieldobjs;
	function ADORecordset_oci8($queryID,$mode=false)
	{
		if ($mode === false) { 
			global $ADODB_FETCH_MODE;
			$mode = $ADODB_FETCH_MODE;
		}
		switch ($mode)
		{
		case ADODB_FETCH_ASSOC:$this->fetchMode = OCI_ASSOC+OCI_RETURN_NULLS+OCI_RETURN_LOBS; break;
		case ADODB_FETCH_DEFAULT:
		case ADODB_FETCH_BOTH:$this->fetchMode = OCI_NUM+OCI_ASSOC+OCI_RETURN_NULLS+OCI_RETURN_LOBS; break;
		case ADODB_FETCH_NUM: 
		default:
		$this->fetchMode = OCI_NUM+OCI_RETURN_NULLS+OCI_RETURN_LOBS; break;
		}
		
		$this->adodbFetchMode = $mode;
		$this->_queryID = $queryID;
	}


	function Init()
	{
		if ($this->_inited) return;
		
		$this->_inited = true;
		if ($this->_queryID) {
			
			$this->_currentRow = 0;
			@$this->_initrs();
			$this->EOF = !$this->_fetch();
			if (!is_array($this->fields)) {
				$this->_numOfRows = 0;
				$this->fields = array();
			}
		} else {
			$this->fields = array();
			$this->_numOfRows = 0;
			$this->_numOfFields = 0;
			$this->EOF = true;
		}
	}
	
	function _initrs()
	{
		$this->_numOfRows = -1;
		$this->_numOfFields = oci_num_fields($this->_queryID);
		if ($this->_numOfFields>0) {
			$this->_fieldobjs = array();
			$max = $this->_numOfFields;
			for ($i=0;$i<$max; $i++) $this->_fieldobjs[] = $this->_FetchField($i);
		}
	}
	function _FetchField($fieldOffset = -1)
	{
		$fld = new ADOFieldObject;
		$fieldOffset += 1;
		$fld->name =oci_field_name($this->_queryID, $fieldOffset);
		$fld->type = oci_field_type($this->_queryID, $fieldOffset);
		$fld->max_length = oci_field_size($this->_queryID, $fieldOffset);
	 	switch($fld->type) {
		case 'NUMBER':
	 		$p = oci_field_precision($this->_queryID, $fieldOffset);
			$sc = oci_field_scale($this->_queryID, $fieldOffset);
			if ($p != 0 && $sc == 0) $fld->type = 'INT';
			$fld->scale = $p;
			break;
		
	 	case 'CLOB':
		case 'NCLOB':
		case 'BLOB': 
			$fld->max_length = -1;
			break;
		}
		return $fld;
	}
	function FetchField($fieldOffset = -1)
	{
		return $this->_fieldobjs[$fieldOffset];
	}
	function MoveNext()
	{
		if ($this->fields = @oci_fetch_array($this->_queryID,$this->fetchMode)) {
			$this->_currentRow += 1;
			return true;
		}
		if (!$this->EOF) {
			$this->_currentRow += 1;
			$this->EOF = true;
		}
		return false;
	}
	function GetArrayLimit($nrows,$offset=-1) 
	{
		if ($offset <= 0) {
			$arr = $this->GetArray($nrows);
			return $arr;
		}
		$arr = array();
		for ($i=1; $i < $offset; $i++) 
			if (!@oci_fetch($this->_queryID)) return $arr;
			
		if (!$this->fields = @oci_fetch_array($this->_queryID,$this->fetchMode)) return $arr;;
		$results = array();
		$cnt = 0;
		while (!$this->EOF && $nrows != $cnt) {
			$results[$cnt++] = $this->fields;
			$this->MoveNext();
		}
		
		return $results;
	}
	function Fields($colname)
	{
		if (!$this->bind) {
			$this->bind = array();
			for ($i=0; $i < $this->_numOfFields; $i++) {
				$o = $this->FetchField($i);
				$this->bind[strtoupper($o->name)] = $i;
			}
		}
		
		 return $this->fields[$this->bind[strtoupper($colname)]];
	}
	


	function _seek($row)
	{
		return false;
	}

	function _fetch() 
	{
		return $this->fields = @oci_fetch_array($this->_queryID,$this->fetchMode);
	}
	function _close() 
	{
		if ($this->connection->_stmt === $this->_queryID) $this->connection->_stmt = false;
		if (!empty($this->_refcursor)) {
			oci_free_cursor($this->_refcursor);
			$this->_refcursor = false;
		}
		@oci_free_statement($this->_queryID);
 		$this->_queryID = false;
		
	}

	function MetaType($t,$len=-1)
	{
		if (is_object($t)) {
			$fieldobj = $t;
			$t = $fieldobj->type;
			$len = $fieldobj->max_length;
		}
		switch (strtoupper($t)) {
	 	case 'VARCHAR':
	 	case 'VARCHAR2':
		case 'CHAR':
		case 'VARBINARY':
		case 'BINARY':
		case 'NCHAR':
		case 'NVARCHAR':
		case 'NVARCHAR2':
				 if ($len <= $this->blobSize) return 'C';
		
		case 'NCLOB':
		case 'LONG':
		case 'LONG VARCHAR':
		case 'CLOB':
		return 'X';
		
		case 'LONG RAW':
		case 'LONG VARBINARY':
		case 'BLOB':
			return 'B';
		
		case 'DATE': 
			return  ($this->connection->datetime) ? 'T' : 'D';
		
		
		case 'TIMESTAMP': return 'T';
		
		case 'INT': 
		case 'SMALLINT':
		case 'INTEGER': 
			return 'I';
			
		default: return 'N';
		}
	}
}

class ADORecordSet_ext_oci8 extends ADORecordSet_oci8 {	
	function ADORecordSet_ext_oci8($queryID,$mode=false) 
	{
		if ($mode === false) { 
			global $ADODB_FETCH_MODE;
			$mode = $ADODB_FETCH_MODE;
		}
		switch ($mode)
		{
		case ADODB_FETCH_ASSOC:$this->fetchMode = OCI_ASSOC+OCI_RETURN_NULLS+OCI_RETURN_LOBS; break;
		case ADODB_FETCH_DEFAULT:
		case ADODB_FETCH_BOTH:$this->fetchMode = OCI_NUM+OCI_ASSOC+OCI_RETURN_NULLS+OCI_RETURN_LOBS; break;
		case ADODB_FETCH_NUM: 
		default: $this->fetchMode = OCI_NUM+OCI_RETURN_NULLS+OCI_RETURN_LOBS; break;
		}
		$this->adodbFetchMode = $mode;
		$this->_queryID = $queryID;
	}
	
	function MoveNext()
	{
		return adodb_movenext($this);
	}
}
?>